EAGLE CORR PE™ * - JM Eagle

The design live load for the pipe is typically H-25 as defined by AASHTO.Some construction and paving equipment is not as heavy as an H-25load. The vehicle load (surface pressure), backfill material and cover heightall influence the allowable construction load. For the minimum backfillcompaction and temporary construction loads, Table 13 illustrates allowableminimum cover heights.Minimum Temporary and Construction CoverSurface PressureInduced byConstructionVehicle (psi)Temporary Minimum Cover forRespective Diameters4" to 48"60"Diameter Pipe (1) Diameter Pipe (1)75 9-inchs 12-inches50 6-inches 9-inches25 3-inches 6-inchesTable 13Vehicles exceeding surface pressures must not be allowed over theinstallation.Certain construction equipment exerts very high surface pressures orloads. For heavy construction equipment between 30 and 60 tons, it isrecommended that an additional 1 to 2 feet of cover be placed over the pipe.Temporary fill may be placed over the pipe during construction and removedafter the heavy construction equipment traffic is rerouted. For very heavyconstruction equipment (exceeding 60 tons) the minimum cover dependson the loading footprint of the equipment. Additional fill may or may not berequired. Consult a qualified engineer for minimum cover heights necessaryfor very heavy equipment traffic.5.6 Special Conditions and Considerations56 EAGLE CORR PE INSTALLATION GUIDE